0.8+0.88= 0.8+0.88+0.888= 0.8+0.88+0.888+0.8888= 0.8+0.88+0.888+0.8888+……+0.8888888=

问题描述:

0.8+0.88= 0.8+0.88+0.888= 0.8+0.88+0.888+0.8888= 0.8+0.88+0.888+0.8888+……+0.8888888=
0.8+0.88=
0.8+0.88+0.888=
0.8+0.88+0.888+0.8888=
0.8+0.88+0.888+0.8888+……+0.8888888=

1.68
2.568
3.4568
6.12345688